Filling The Internal Deionized Water Circuit - Siemens SINAMICS S120 Manual

Commissioning the cooling circuit

5.4 Filling the internal deionized water circuit

Inhibitors
When using one of the approved antifreezes, an inhibitor is already included with the
specified concentration.
When operated without antifreeze, then Fuchs Anticorit S 2000 A inhibitor must be added
with a ratio of 4 ... 5 %.
5.4 Filling the internal deionized water circuit
To fill the internal deionized water circuit you require a drum pump and a 1/2 " hose. We
recommend that a drum pump is used that can produce a pressure of 3 bar.
The coolant must be mixed before filling the cooling circuit. 100 l drums are suitable for the
purpose, for example.
Note
The drum pump is not included in the scope of delivery.
Filling the cooling circuit
1. Close all vent valves and drain valves.
2. Connect the drum pump to the filling connections (65.1) of the Heat Exchanger Module
using the hose.
3. Open all of the valves in the Heat Exchanger Module, with the exception of the valves for
draining.
4. Using the drum pump, pump the coolant into the cooling circuit until the pressure
manometer shows approx. 2.1 bar.
Note
Prevent the ingress of dirt and foreign bodies into the cooling circuit.
126
Cabinet Modules liquid cooled
Equipment Manual, 04/2020, A5E37067587A